Strongs Concordance:

God his king, a man of the tribe of Judah, of the family of the Hezronites, and kinsman of Boaz, who dwelt in Bethlehem in the days of the judges. In consequence of a great dearth he, with his wife Naomi and his two sons, went to dwell in the land of Moab. There he and his sons died (Ruth 1:2, 3; 2:1, 3; 4:3, 9). Naomi afterwards returned to Palestine with her daughter Ruth.

(my God is king), a man of the tribe of Judah and of the family of the Hezronites, who dwelt in Bethlehem-Ephratah in the days of the Judges. (B.C. 1312.) In consequence of a great death in the land he went with his wife, Naomi, and his two sons, Mahlon and Chilion, to dwell in Moab, where he and his sons died without posterity. (Ruth 1:2,3) etc.